Sekai
Consumer & Utility Software · Mobile Games
7open roles
$20Mlatest round · Series A · Jun 2026 · 5 mo ago
1backers · a16z speedrun
50+team · employees, estimated range
Overview
Sekai is a platform to play, create, and remix interactive mini-apps instantly. Explore an infinite feed of games and experiences, try one, or build your own and share it with anyone.
Key facts
As of Nov 13, 2026, Alion lists 7 open roles at Sekai. Sekai is headquartered in San Francisco, United States. It was founded in 2024. The latest round is Series A of $20M, announced in 2026.
- Open roles
- 7Job postings Alion tracks, as of Nov 13, 2026
- Headquarters
- San Francisco, United StatesAlion company profile, updated Nov 13, 2026
- Founded
- 2024Alion company profile, updated Nov 13, 2026
- Employees
- 50+Alion company profile, an estimated range
- Total raised
- $20MSum of 1 equity round Alion knows
- Latest round
- Series A · $20M · Jun 1, 2026Press report · finance.yahoo.com
- Technologies in its job postings
- 66Named in its job postings
How Sekai hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Sekai scores B on the Alion truth index (A is best, E worst), measured over 4 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Funding and backers
Total raised
$20M
1 round on record
Latest round
$20M
Series A · Jun 2026 · 5 mo ago
Team
51-200
employees, estimated range
Hiring now
7
+2 posted in 30 days
Backers
1
a16z speedrun
The money's age
Fresh money
5 months since the last round · and hiring
Momentum
46/100
hiring for its size, in the news, fresh money
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Tractionpublic signals, read monthly
Web presence
top 9%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series A | Jun 2026 | $20M | — | YahooFinance |
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
Similar startupsby what they do, their industry and backers
Rork is a cross-platform AI app builder for iOS, Android & web. Publish to the App Store & Google Play in hours. Business tools, social…
MISFITZ is a true extraction game built for mobile. Ally or betray, extract or lose it all. From ex-Brawl Stars and Candy Crush devs. Free…
We make software that helps games build their player base through challenges that help influencers grow. Dare Drop allows its publishers to…
StarBerry Games GmbH is a mobile games company based in Berlin, Germany. The company develops free-to-play casual mobile games and is best…
Original mobile games and interactive experiences from Saudi Arabia to the world.
The ultimate social arcade: play, remix, and create games with friends! The ultimate social arcade.
Jobs
In office · Full-Time · 5+ years exp · San Francisco
Python
Go
FastAPI
Django
Celery
Databases
MySQL
PostgreSQL
Redis
Apache Kafka
Google BigQuery
AI/ML
LLM
DevOps
Rest API
gRPC
Terraform
GCP
Datadog
CI/CD
AWS
Docker
Kubernetes
Nginx
AWS Lambda
Amazon S3
IAM
Amazon ECS
Amazon CloudWatch
VPN
Cybersecurity
Zero Trust
Least Privilege
QA
Sentry
Apply
≈ $171k – $330k per year (Estimated) · In office · Full-Time · 5+ years exp · San Francisco
Reinforcement Learning
Multimodal AI
LLM
Semantic Search
Recommender Systems
Machine Learning
Apply
≈ $104k – $215k per year (Estimated) · In office · Full-Time · 2+ years exp · San Francisco
Python
JavaScript
Next.js
React.js
Apply
≈ $158k – $281k per year (Estimated) · In office · Full-Time · 5+ years exp · San Francisco
JavaScript
Java
Kotlin
TypeScript
Dart
Gradle
AI/ML
Copilot
Cursor
Claude Code
OpenAI Codex
Frontend
React.js
Mobile
Jetpack Compose
Android SDK
Flutter
React Native
Firebase
Modularization
Crashlytics
DevOps
Datadog
CI/CD
QA
Sentry
Apply
≈ $156k – $278k per year (Estimated) · In office · Full-Time · San Francisco
JavaScript
Dart
Swift
React.js
Mobile
Flutter
React Native
iOS SDK
Apply
≈ $103k – $205k per year (Estimated) · In office · Full-Time · 2+ years exp · San Francisco
SQL
Google BigQuery
AI/ML
Cursor
Claude Code
OpenAI Codex
Recommender Systems
Apply
≈ $156k – $348k per year (Estimated) · In office · Full-Time · San Francisco
Python
TypeScript
LangGraph
LangChain
Model Context Protocol
Fine-tuning
Function Calling
AI Agents
Pydantic AI
LLM
Google ADK
LLM Evaluation
Agentic Workflows
Vercel AI SDK
Apply
Growth
Hiring Momentum
45/100
Stable
Open positions
7
1 opened / 0 closed in 30 days
ATS activity
Every ~6 hours
Today
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
33% ▲
Mobile
33% ▼
DevOps
33% ▲
Activity Timeline
Added Semantic Search to stack
Oct 2026
Added Reinforcement Learning to stack
Oct 2026
Added Multimodal AI to stack
Oct 2026
Added Machine Learning to stack
Sep 2026
Financials
Total raised
$20M
Latest round
Series A
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Series A | 2026 | $20M | Details |
Tech stack
Technologies named in job postings at Sekai over the last 12 months, by layer, with the share of postings for each.
Technologies in use
66
Postings analysed
7
Stack modernity
81/100AI adopter
Languages
Python
JavaScript
TypeScript
Dart
Frameworks & libraries
React.js
Flutter
React Native
Celery
Databases
Google BigQuery
MySQL
PostgreSQL
Redis
Cloud & platforms
Datadog
Sentry
AWS
AWS Lambda
AI & ML
LLM
Sign in to see how your skills match this stack
Sign In
Full Sekai tech stack
66 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
a16z speedrunVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
Shared investors
News
Sekai Project to Release Neko-Mimi Sweet Housemates 2, Neko-Nin exHeart Spin! 2 Visual Novels in West
Company to also release Nekopara 10th Anniversary -Sayori Art Works- artbook
Read more
Report
Sekai Raises $26 Million To Build A Social Platform For AI-Created Mini-Apps
Sekai announced it has raised $26 million in funding to accelerate the growth of its social platform that enables users to create, play, and remix AI-generated mini-apps. The funding round was led by Khosla Ventures and Connect Ventures, with participatio
Read more
Report
Exclusive: Sekai raises $20M for AI app creation
Sekai has raised a $20 million Series A to grow a platform for creating mini apps through text prompts, founder and CEO Lucky Zhang exclusively tells Axios.
Read more
Report
Sekai: A Video Dataset towards World Exploration
Abstract page for arXiv paper 2506.15675: Sekai: A Video Dataset towards World Exploration
Read more
Report
Is 'Cobra Kai's Sekai Taikai a Real Tournament?
The Sekai Taikai is the main event in Cobra Kai Season 6, but is the karate tournament real? The answer might surprise you.
Read more
Report
Sekai secures Naruto's license to develop consumer apps for anime fans
Just like in your favorite anime, this is the story of a young group of twentysomethings who started with nothing, traveled the world and ended up with a
Read more
Report
Sekai magazine gets progressive revamp under new leadership The Asahi Shimbun: Breaking News, Japan News and Analysis
The Japanese liberal political magazine Sekai announced that it is being revamped for the first time in a quarter of a century to achieve greater gender parity and reach new audiences.
Read more
Report
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
7 open roles 3 posted in 90 days 86% engineering 50-200 est. staff
hires for AI/ML, Mobile, Backend
How to cite this page
Alion, "Sekai: key facts", as of Nov 13, 2026. https://alion.io/company/sekai
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page. CC BY-SA 4.0